First, Be a Good Animal.

First, Be a Good Animal: The science and philosophy of aging well for adults 50+.

Strength, longevity, and the joy of moving like a good animal, from a 74-year-old trainer still in training.

This is a collection of articles written by Marty Trussell, NASM-CPT, Part science, part memoir, part philosophy, this is a blog for anyone who wants not just to slow the decline, but to keep building.

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Marty Trussell, NASM - CPT Marty Trussell, NASM - CPT

HRV: Your Fitness Tracker Might Already Know This — But Do You Know What It Means?

Here’s something that may surprise you: if you wear a Garmin, an Apple Watch, a Whoop band, or an Oura Ring to bed at night, there is a very good chance your device has been quietly measuring this metric for months — possibly years — without you paying much attention to it.

It’s called Heart Rate Variability. HRV.

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